Dr. David Brownstein is a "holistic" physician who practices in Dr. Gorski's neck of the woods. Unfortunately, he just wrote a book promoting an unproven protocol involving vitamins, nebulized hydrogen peroxide and iodine, and intravenous ozone to treat COVID-19. There is no evidence that his protocol works, other than a very poor quality case series.
Joel Fuhrman is selling an overpriced iodine urine test that is not valid for testing individuals. Patients may be led to believe they are iodine deficient when they are not. Iodine supplements on the market vary widely including orthomolecular doses, and they make unsupported claims that mislead customers.